privacyIDEA is a multi-factor authentication solution. It can manage any type of authentication device. All common OTP (one time password) devices are supported, including Google Authenticator, eToken Pass, OTP cards, and Yubikey. New devices can be added easily. Users can be retrieved from flat files, LDAP, Active Directory, SQL databases, and SCIM services. It can also handle authorization and writes all events to a digitially signed audit log, giving you basic AAA functionalities.

TagSpaces lets you organize, tag, and browse your files, photos, and documents on many platforms. It lets you create and manage notes and Web snippets (like in Evernote, but completely offline) and create a personal Wiki system. It features integrated MHTML, PDF, ODF, and image viewers, a Markdown viewer and editor, an advanced WYSIWYG HTML5 editor, file tagging based on filenames (extremely portable), a simple source code viewer and editor for the most common programming languages, and basic file and directory management.

JS-Collider is an event-driven Java network NIO framework. It is designed to provide maximum performance and scalability for applications having not too many connections but significant amounts of network traffic (both incoming and outgoing). Performance and scalability are achieved via lock free algorithms and atomic states usage. It supports UDP (with multicast) as well. One of the implementation points is to avoid unsafe cheating; it should work the same way on all JVMs (Java 1.7). It supports shared memory IPC.

STK/Unit is a pure SQL testing framework for MariaDB and MySQL. Users can create Base Tests (Stored Procedures) which are part of Test Cases (databases) and, optionally, Test Suites (other Stored Procedures).
Output is stored in internal tables. You can convert it to a human-readable string, valid HTML, or query some convenient views which group results. It can be used to test any SQL structure (tables, views, triggers, stored routines), as well as server upgrades or configuration changes.

Kune is a distributed social network focused on collaboration rather than just on communication. It focuses on online real-time collaborative editing (Wave-based), decentralized social networking (federation), and Web publishing, while focusing on workgroups rather than just on individuals. It aims to create online spaces for collaborative work where organizations and individuals can build projects online, coordinate common agendas, set up virtual meetings, publish on the Web, and join organizations with similar interests. It has a special focus on Free Culture and social movements needs.

XOWA is a desktop application that can read and edit English Wikipedia offline. It displays articles in an HTML browser, and can download images on demand. It can also be used for Wiktionary, Wikisource, Wikiquote, and the non-English counterparts.